1. Long grass short feeding. As the saying goes, "an inch of grass does not give birth to three knives, and it is not expected to gain weight." Feeding short forage grass can generally save about 20% and improve the utilization rate by about 15%. Many livestock can effectively use the short stalks that are eaten little or hard to eat during the whole feeding process, and the digestibility is also improved. Generally, the straw for cattle can be cut into 4 ~ 6 cm, and the straw for sheep should be cut shorter.

2. coarse grass and fine materials. Mechanically crushing seeds or straws is convenient for livestock to eat and digest, which is beneficial to the mixing of digestive juice and chyme, thus reducing energy consumption in gastrointestinal digestion and improving feed utilization rate.

Hard grass is easy to feed. After salinization, saccharification, ammoniation or microbial fermentation, the palatability of crops used as forage grass can be greatly improved, which is beneficial to digestion and absorption.

4. Reasonable collocation. The first is the combination of thickness. Feed roughage first, livestock can eat roughage more when they are hungry, and then feed concentrate or high-quality forage according to nutritional needs. This can not only save forage, but also give full play to the utilization of roughage by ruminants. Followed by the combination of green and thick. Generally, there are few vitamins in coarse grains. When feeding livestock and poultry with roughage, we should pay attention to adding some green juicy feed and germinated feed appropriately. Finally, it is thick. When feeding livestock and poultry with roughage, we should pay attention to reasonable adjustment and use, strive for diversification, and don't feed one for a long time. Otherwise, it will not only fail to meet the nutritional needs of livestock and poultry, but also easily lead to diseases. For example, feeding livestock with wheat straw for a long time can lead to delayed rumen development of cattle and sheep and indigestion of equine animals.